JP2020104611A - Platform door state diagnosis system, platform door and platform door state diagnosis method - Google Patents

Abstract

To provide a platform door state diagnosis technology that can accurately diagnose a deterioration state of a drive mechanism to solve such the problem that it is difficult for an existing system to accurately diagnose a deterioration state of a drive mechanism.SOLUTION: A platform door state diagnosis system 1 includes: an acquisition unit 34 for acquiring vibration information on vibration of a drive mechanism 8 when a platform door 100 is opened or closed by the drive mechanism 8; and a determination unit 42 for determining whether maintenance is required or not on the basis of the vibration information acquired by the acquisition unit 34.SELECTED DRAWING: Figure 2

Description

The present invention relates to a home door condition diagnosis system, a home door, and a home door condition diagnosis method.

Patent Document 1 describes a platform door operation abnormality detection system that detects an operation abnormality of a platform door system. The system described in Patent Document 1 collects an operation log of a control system that controls the system, and detects an abnormal operation of the system based on comparison with design knowledge information that defines a normal operation of the control system.

JP, 2008-094299, A

The present inventor has gained the following recognition about platform doors that are opened and closed on the platform.
Some home doors are opened and closed by a drive mechanism driven by a motor. In such a home door, the drive mechanism may fail due to deterioration due to aging or the like. Since the failure of the home door has a great influence on the user, it is desirable to diagnose the deterioration state of the drive mechanism before the failure occurs, to catch the sign of the failure, and to prevent the failure in advance. The system described in Patent Document 1 has a problem that it is difficult to accurately diagnose the deterioration state of the drive mechanism.
From these, the present inventor has recognized that the technique described in Patent Document 1 has room for improvement from the viewpoint of accurately diagnosing the deterioration state of the drive mechanism of the platform door.

The present invention has been made in view of these problems, and an object of the present invention is to provide a platform door state diagnosis technology capable of accurately diagnosing a deterioration state of a drive mechanism.

In order to solve the above problems, a state diagnosis system for a home door according to an aspect of the present invention includes an acquisition unit that acquires vibration information regarding vibration of the drive mechanism when the home door is opened and closed by the drive mechanism, and an acquisition unit. And a determination unit that determines whether maintenance is required based on the vibration information acquired by.

It should be noted that any combination of the above and components or expressions of the present invention may be replaced with each other between a method, a device, a program, a temporary or non-temporary storage medium storing the program, a system, etc. It is effective as an aspect of the present invention.

According to the present invention, it is possible to provide a platform door state diagnosis technique capable of accurately diagnosing a deterioration state of a drive mechanism.

It is a block diagram which shows schematically the structure of the state diagnosis system of the platform door which concerns on 1st Embodiment. It is a block diagram which shows the state diagnostic system of FIG. 1 schematically. 3 is a flowchart showing an example of the operation of the state diagnosis system of FIG. 1.

The present inventor has studied the platform door device (hereinafter referred to as “home door” in the present specification) installed on the platform for passengers getting on and off at railway stations and the like, and has obtained the following findings.

In a home door, it is conceivable to open and close the door by a drive mechanism that uses a component such as a linear guide that supports the movement of the door (hereinafter collectively referred to as "linear guide or the like"). When the platform door has a large opening, the mass of the door increases. When the door is heavy and the frequency of opening and closing is high, the linear guide and the like are easily damaged by wear and deformation. In particular, in the case of a cantilever structure, there is a tendency that the wear progresses quickly. Further, the platform is apt to be distorted due to the vibration of the train, and in some cases, it is not flat, so that there is a problem that the linear guide or the like is easily damaged.

If the linear guide or the like fails, the platform doors cannot be opened and closed, which may affect railway operation. For this reason, it is desirable to accurately grasp the sign of failure of the linear guide or the like before the linear guide or the like fails and to take measures such as replacement in advance. From these, the present inventor notices that the vibration of the drive mechanism including them changes when the linear guide or the like is worn or deformed, and detects the vibration of the drive mechanism directly or as air vibration (noise). Then, based on the detection result, a technique for diagnosing the deterioration state of the drive mechanism was found. Hereinafter, the application example will be described based on the embodiment.

Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings. In the embodiment and the modified examples, the same or equivalent constituent elements and members are designated by the same reference numerals, and the duplicated description will be omitted as appropriate. In addition, the dimensions of the members in each drawing are appropriately enlarged or reduced for easy understanding. Further, in each drawing, some of the members that are not important for explaining the embodiment are omitted.
Also, terms including ordinal numbers such as first and second are used to describe various constituent elements, but this term is used only for the purpose of distinguishing one constituent element from another constituent element. The constituent elements are not limited by.

[First Embodiment]
A configuration of a platform door state diagnosis system 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a configuration diagram schematically showing a configuration of a platform door state diagnosis system 1 according to the first embodiment. FIG. 2 is a block diagram schematically showing the platform door state diagnosis system 1.

The state diagnosis system 1 is a system for supporting the home door 100 regarding maintenance. In particular, this system diagnoses the state of the drive mechanism 8 according to the vibration information regarding the vibration of the drive mechanism 8 when the platform door 100 is opened and closed by the drive mechanism 8.

Each functional block shown in FIG. 2 can be realized by an electronic element such as a CPU of a computer or a mechanical part in terms of hardware, and can be realized by a computer program in terms of software. It depicts the functional blocks realized by cooperation. Therefore, it will be understood by those skilled in the art that these functional blocks can be realized in various ways by combining hardware and software.

As shown in FIGS. 1 and 2, the home door state diagnosis system 1 includes a home door 100, an integrated control unit 40, and a management device 50. One or more platform doors 100 are provided on the platform Pf. The home door 100 opens and closes the door 12 by the drive mechanism 8 driven by the motor 24. The integrated control unit 40 centrally controls one or a plurality of home doors 100 via a transmission path 40d that transmits information. The transmission line 40d may be a LAN (Local Area Network), but the transmission line 40d of the present embodiment is a data bus. The platform door 100 and the integrated control unit 40 are connected to the transmission line 40d by the bus connecting unit 40a.

The integrated control unit 40 controls the opening and closing of the door of the home door 100 according to the operation of the operator. For example, the opening/closing command signal of the door 12 is transmitted to each home door 100 according to the operation information from the operation unit 40s operated by the station staff. In addition, the integrated control unit 40 acquires predetermined information such as information regarding opening/closing of the door and information regarding presence/absence of abnormality from the home door 100. For example, a platform Pf corresponding to a 10-car train having four doors in one vehicle is provided with 40 platform doors 100 and one integrated control unit 40 in series. In this case, the overall control unit 40 controls opening/closing of the 40 home doors 100 and acquires predetermined information from them. In these senses, the integrated control unit 40 may be called an integrated control panel.

An ID code for identifying each platform door 100 is given to each platform door 100. In the example of FIGS. 1 and 2, each home door 100 is assigned an ID code consisting of alphabets such as A, B, and C. When transmitting information, the overall control unit 40 simultaneously transmits the ID code of the target home door 100. Each home door 100 receives the transmission information only when the transmitted ID code is its own. When transmitting information, each home door 100 simultaneously transmits its own ID code. The integrated control unit 40 integrally receives the transmission information transmitted from the home door 100 together with the ID code, and processes them integrally. In the following description, unless otherwise specified, various types of information are transmitted/received integrally with the ID code and are integrally processed.

In order to distinguish each platform door 100 and its constituent elements, a hyphen and an ID code may be added at the end of the code, such as "-B", "-C", and "-D". ..

Further, the integrated control unit 40 acquires predetermined information regarding the vibration of the drive mechanism 8 from the home door 100, and diagnoses the state of the home door 100 based on the acquisition result. The integrated control unit 40 will be described later in detail.

The management device 50 includes a monitoring computer, and monitors in real time information regarding the open/close status of each home door 100 and the presence/absence of an abnormality. The management device 50 of this embodiment is provided in the management center 50c. The management device 50 communicates with the overall control unit 40 via the network NW, and acquires information regarding the maintenance of the drive mechanism 8 (hereinafter referred to as “maintenance information”) from the overall control unit 40. For example, the management device 50 can store the maintenance information and display the maintenance information on the display device. The management device 50 can output maintenance information to an external device such as a printer or another information terminal. This external device may be a desktop type or a portable type.

(Home door)
Next, a specific configuration of the home door 100 will be described. As shown in FIG. 1, the home door 100 includes a door engine 10, a door 12, a belt 14, a drive pulley 16, a driven pulley 18, a linear guide 20, a suspension portion 22, a controller 30, and a vibration. The detection unit 38 is mainly included. The door engine 10, the belt 14, the drive pulley 16, the driven pulley 18, the linear guide 20, and the suspension portion 22 are components that configure the drive mechanism 8 of the home door 100, and are provided in the header box 60, for example. The home door 100 opens and closes a predetermined frontage by moving the door 12 in the left-right direction in FIG. 1 (hereinafter, referred to as “movable direction”).

The door engine 10 includes a motor 24 and a gear mechanism (not shown) that rotationally drives the drive pulley 16 based on the rotation of the motor 24. The door engine 10 functions as a power source for opening and closing the door 12 by the driving force of the motor 24. The motor 24 is driven by an IPM (intelligent power module) provided in an engine drive unit 28 described later. The motor 24 may be a motor based on various known principles. The motor 24 of this embodiment is a brushless motor having an encoder 24e using a Hall IC.

The driven pulley 18 is provided apart from the drive pulley 16 in the movable direction. The belt 14 is looped around the outer circumferences of the driving pulley 16 and the driven pulley 18. The belt 14 rotates the driven pulley 18 as the drive pulley 16 rotates. Belt 14 may be a toothed timing belt.

The linear guide 20 is a rail member for guiding the door 12 above the door 12, and extends in the movable direction of the door 12. The suspension portion 22 is a mechanism for suspending the door 12 on the linear guide 20, and is provided on the upper portion of the door 12. The suspension portion 22 has a door roller 22c that rolls the linear guide 20, and is supported by the linear guide 20 via the door roller 22c. The door 12 is connected to the belt 14 via a connecting member 12j.

The controller 30 controls the opening/closing operation of the door 12 based on the opening/closing command signal from the integrated control unit 40, and also functions as an individual control device that provides the integrated control unit 40 with predetermined information about the home door 100. The controller 30 includes an engine drive unit 28, a control unit 26, an acquisition unit 34, an information communication unit 30c, an information storage unit 30m, and an output unit 32. The engine drive unit 28 functions as a drive circuit that drives the motor 24 of the door engine 10. The control unit 26 controls the opening/closing operation of the door 12 via the engine drive unit 28.

The vibration detection unit 38 detects the vibration of the drive mechanism 8 as air vibration directly or via air, and gives the detection result to the acquisition unit 34 as information regarding the vibration (hereinafter, referred to as “vibration information Li”). This air vibration may be detected as noise. The acquisition unit 34 acquires the vibration information Li of the drive mechanism 8 from the vibration detection unit 38.

The information communication unit 30c communicates with the general control unit 40 via the transmission path 40d, and receives the opening/closing command signal from the general control unit 40. The information communication unit 30c also transmits predetermined information to the general control unit 40. In this sense, the information communication unit 30c also functions as an output unit that outputs the acquisition result of the acquisition unit 34 to the outside. The information storage unit 30m stores predetermined information. The output unit 32 outputs the acquisition result of the acquisition unit 34 to the outside.

In the home door 100 thus configured, when the motor 24 rotationally drives the drive pulley 16, the drive pulley 16 and the driven pulley 18 rotate, and the belt 14 moves in a loop. When the belt 14 moves, the suspension portion 22 suspended on the belt 14 via the connecting member 12j moves on the linear guide 20 in the movable direction. The door 12 moves in the movable direction together with the suspension portion 22 to open and close. The home door 100 opens the door 12 based on the door opening command signal from the integrated control unit 40, and closes the door 12 based on the door closing command signal.

With the above configuration, the speed of the door 12 (hereinafter, referred to as “door speed”) is proportional to the rotation speed of the motor 24. Therefore, the control unit 26 can acquire the door speed from the frequency or cycle of the output pulse of the encoder 24e. The control unit 26 can acquire the position of the door 12 (hereinafter, referred to as “door position”) by counting the output pulse of the encoder 24e. The control unit 26 controls the movement of the door 12 as follows according to the door speed and the door position.

(Opening motion)
Next, the opening operation of the door 12 will be described. The opening operation is an operation of moving the door 12 stopped at the closed position to the open position and stopping it. The opening operation includes an acceleration operation for accelerating the door 12 to a predetermined speed, a speed control operation for maintaining the door 12 at a predetermined speed, a deceleration operation for decelerating the door 12, and a low speed to bring the door 12 close to a stop position. It includes an approaching operation and a stopping operation for stopping the door 12. In the acceleration operation, when the door 12 is accelerated to reach a predetermined speed, the operation is switched to the speed control operation. In the speed control operation, when the position of the door 12 reaches a predetermined position, it is switched to the deceleration operation. In the deceleration operation, when the door 12 reaches the approaching speed, the operation is switched to the approaching operation. In the approaching operation, the door 12 is moved to the open position.

In the stop operation, the door 12 is brought into contact with the stopper 12s and stopped. In this operation, the motor 24 is energized to press the door 12 against the stopper 12s (hereinafter, referred to as "opening operation pressing") so that the door 12 does not move due to a reaction. This pressing operation may be temporary or continuous.

(Close operation)
The closing operation is an operation of moving the door 12 from the open position to the closing position and stopping the door 12, and differs from the opening operation in that the moving direction is opposite. Similar to the closing operation, the closing operation includes an acceleration operation, a speed control operation, a deceleration operation, an approaching operation, and a stopping operation. In the stop operation, both doors 12 are brought into contact with each other and stopped. In this operation, the motor 24 is energized and both doors 12 are pressed against each other (hereinafter, referred to as "closing operation pressing") so that the doors 12 do not move due to reaction. This pressing operation may be temporary or continuous. In the case of one-sided opening, the door 12 is brought into contact with a stopper provided separately to stop.

(Vibration detector)
Next, the vibration detector 38 will be described with reference to FIG. As described above, the vibration detection unit 38 functions as a detection element that detects the vibration of the drive mechanism 8 directly or as air vibration. The vibration detection unit 38 may be a vibration sensor that directly detects the vibration of the drive mechanism 8 or a sound sensor that detects the vibration of the drive mechanism 8 as air vibration. In this example, the sound sensor is a microphone (hereinafter referred to as "microphone").

(Cover member)
It is considered that the vibration detection unit 38 arranged on the home door 100 is affected by disturbance such as external noise or external vibration. Therefore, the present embodiment has a cover member that covers at least a part of the drive mechanism 8, and the vibration detection unit 38 is arranged in a region covered by this cover member. The cover member may be a door pocket 52 that houses the door 12 in an open state, or a header box 60 that covers the drive mechanism 8. In the present embodiment, the vibration detection unit 38 is arranged inside the header box 60 and inside the door pocket 52.

The vibration detection unit 38 may include a plurality of sensors arranged corresponding to the plurality of elements forming the drive mechanism 8. In the present embodiment, the vibration detection unit 38 includes a sensor 38b corresponding to the door engine 10, a sensor 38c corresponding to the linear guide 20, a sensor 38d corresponding to the door 12, and a sensor 38e corresponding to the driven pulley 18. Including.

The sensor 38b may be a vibration sensor mounted on the door engine 10 or a microphone arranged near the door engine 10. The sensor 38c may be a vibration sensor mounted on the linear guide 20 or a microphone arranged near the linear guide 20. The sensor 38d may be a microphone arranged near the door 12 or may be a vibration sensor attached to the door 12 or the door pocket 52. The sensor 38e may be a microphone arranged near the driven pulley 18 or may be a vibration sensor mounted on a support member that supports the driven pulley 18.

When the vibration detection unit 38 includes a microphone, it is desirable that the microphone is arranged with its sound collection direction facing the corresponding element, and the microphone is preferably unidirectional.

Next, an information processing operation of the controller 30 will be described. The acquisition unit 34 acquires the vibration information Li of the drive mechanism 8 from the vibration detection unit 38. The information storage unit 30m stores integrated information in which predetermined additional information is added to the vibration information Li. Although the additional information is not limited, the additional information may include information about a door position (door stroke), door speed, status information, door input/output data, acquisition date and time, and the like. The status information may include information regarding opening/closing of the door 12 and information regarding whether or not there is an abnormality in the operation of the door 12. In this example, the information storage unit 30m adds the acquisition date and time to the integrated information in which the vibration information Li and the door speed are associated with the door position, and stores them in time series.

The information communication unit 30c transmits the integrated information stored in the information storage unit 30m to the general control unit 40. The information storage unit 30m may delete the stored information after transmitting the integrated information to the comprehensive control unit 40. The information communication unit 30c transmits status information from the home door 100 to the comprehensive control unit 40. The above is the description of the platform door 100.

(General control unit)
Next, the overall control unit 40 will be described with reference to FIG. The integrated control unit 40 includes an operation acquisition unit 40b, an internal communication unit 40c, an external communication unit 40e, a determination unit 42, an influence identifying unit 44, and a storage unit 40m. The operation acquisition unit 40b acquires the operation information of the operator (station clerk) from the operation unit 40s. The internal communication unit 40c communicates with the home door 100. The external communication unit 40e communicates with the outside of the general control unit 40 such as the management device 50. The determination unit 42 determines whether the state diagnosis of the drive mechanism 8 is necessary. The storage unit 40m stores predetermined information.

The internal communication unit 40c communicates with the information communication unit 30c via the transmission path 40d and transmits an opening/closing command signal for the door 12 based on the operation information to the home door 100. Further, the internal communication unit 40c receives status information such as information regarding opening/closing of the door 12 and information regarding presence/absence of abnormality from the home door 100. Further, the internal communication unit 40c receives the vibration information Li and the integrated information in which the door speed is associated with the door position from the home door 100.

(Judgment part)
Next, the operation of the determination unit 42 will be described. The determination unit 42 determines whether or not the state diagnosis of the drive mechanism 8 is necessary based on the received vibration information Li. In particular, the determination unit 42 may determine whether or not the state diagnosis of the drive mechanism 8 is necessary, by comparing the vibration information Li with the preset reference value Ls. For example, the determination unit 42 may determine that maintenance is necessary when the vibration information Li exceeds a threshold value Lt obtained by adding a margin to the reference value Ls. A quantitative determination result can be obtained by using the reference value Ls and the threshold value Lt.

The reference value Ls may be a value set by design, or may be vibration information acquired before the installation or maintenance of the home door 100. In addition, the reference value Ls may be vibration information acquired in the past such as last month, last week, or yesterday regarding the home door 100. Further, the reference value Ls may be vibration information regarding the same or similar platform doors as the platform door 100. The reference value Ls and the threshold value Lt may be changed every predetermined time. The reference value Ls and the threshold value Lt are stored in the storage unit 40m.

The determination unit 42 classifies the vibration information Li into a plurality of sections based on the threshold value Lt. The threshold Lt may be one. For example, when the vibration information Li is equal to or less than the threshold value Lt, it may be determined that the maintenance is unnecessary, and when the vibration information Li exceeds the threshold value Lt, it may be determined that the maintenance is necessary.

The threshold Lt may include two or more thresholds. In the determination unit 42 of this embodiment, the threshold Lt includes a first threshold Lt1 and a second threshold Lt2. For example, when the vibration information Li is less than or equal to the first threshold value Lt1, it is determined that maintenance is not necessary, and when the vibration information Li exceeds the first threshold value Lt1 and is less than or equal to the second threshold value Lt2, it is determined that maintenance is required within a predetermined period, and the second threshold value Lt2. If it exceeds, it may be promptly determined that maintenance is required. By using a plurality of threshold values Lt1 and Lt2, a more appropriate determination result can be obtained.

The determination frequency of the determination unit 42 will be described. The determination unit 42 may execute the determination process at any time. The determination unit 42 of the present embodiment executes a determination process before starting work or after finishing work every day. In this case, the processing load on the determination unit 42 is reduced as compared with the case where it is executed at any time, and processing can be performed even by a processing device having a low processing capacity, and cost reduction and downsizing can be easily realized. Further, by performing the operation before or after the work, the maintenance work of the drive mechanism 8 can be immediately performed when it is determined that the maintenance is necessary, so that the influence on the normal operation can be suppressed to the minimum.

The timing at which the determination unit 42 makes the determination will be described. The determination unit 42 uses the vibration information Li acquired when performing any one or more of the acceleration operation, the speed control operation, the deceleration operation, the approach operation, the stop operation, and the pressing operation in the opening operation or the closing operation. The state of the drive mechanism 8 may be diagnosed based on this to determine whether maintenance of the drive mechanism 8 is necessary. Hereinafter, an example of the determination timing will be described.

(First example)
For example, due to the characteristics of the platform door, the vicinity of the end of the linear guide 20 is often damaged by deformation or wear. Therefore, the determination unit 42 performs a state diagnosis of the drive mechanism 8 based on the vibration information Li acquired while the door 12 of the home door 100 moves from the vicinity of the closed position to the closed position, and the determination of the drive mechanism 8 is performed. Whether maintenance is necessary may be determined. That is, the determination unit 42 may make the determination based on the vibration information Li acquired when performing the approaching motion or the stopping motion. In this case, the damage state near the end of the linear guide 20 can be easily grasped.

(Second example)
It is desirable that the vicinity of the end of the linear guide 20 can be carefully evaluated. Therefore, the determination unit 42 performs the state diagnosis of the drive mechanism 8 based on the vibration information Li acquired when the door 12 of the home door 100 is stopped at the closed position or the open position, and the maintenance of the drive mechanism 8 is performed. The necessity of may be determined. That is, the determination unit 42 makes a determination based on the vibration information Li acquired when the operation of pressing the door 12 against the stopper 12s is performed (when the opening operation is pressed) while the door 12 is stopped at the open position. Good. Further, the determination unit 42 makes a determination based on the vibration information Li acquired when the doors 12 are stopped at the closed position and the doors 12 are pressed against each other (when the closing operation is pressed). Good.

(Third example)
The home door 100 may generate an abnormal vibration during the speed control operation when the drive mechanism 8 has some malfunction. Therefore, the determination unit 42 performs a state diagnosis of the drive mechanism 8 based on the vibration information Li acquired during the speed control operation in the opening operation, and determines whether the drive mechanism 8 needs maintenance. Good. In this case, the malfunction of the drive mechanism 8 can be easily diagnosed.

(Fourth example)
In the home door 100, if the surface of a metal component such as a ball bearing included in the drive mechanism 8 has an abnormality such as flaking (surface separation), abnormal vibration may occur during acceleration operation. Therefore, the determination unit 42 performs the state diagnosis of the drive mechanism 8 based on the vibration information Li acquired during the acceleration operation in the opening operation, and determines whether the drive mechanism 8 needs maintenance. Good. For example, even when the vibration information Li is smaller than the threshold value Lt, the vibration information Li remains higher than the reference value Ls for a predetermined number of days (for example, 2 days and 3 days), and the vibration information Li is also included. Is higher than the previous level, it may be diagnosed that the surface of the metal component such as the ball bearing is abnormal.

Next, the processing operation of the determination result of the determination unit 42 will be described. The determination unit 42 generates maintenance information based on the determination result. The determination unit 42 of the present embodiment generates maintenance information indicating the determination result when it is determined that the maintenance is required within a predetermined period and when it is promptly determined that the maintenance is required.

(Impact identification unit)
The vibration detection unit 38 may detect vibration including external noise and external vibration (hereinafter referred to as “disturbance vibration”) generated when the train enters the platform Pf. In this case, the determination unit 42 may make an erroneous determination due to disturbance vibration. The present embodiment has an influence identifying unit 44 that identifies the influence of the progress of the train. The influence identifying unit 44 analyzes the vibration information Li to identify whether or not the disturbance vibration due to the progress of the train is included, and the determining unit 42 subtracts the identification result of the influence identifying unit 44 from the drive mechanism 8. The state diagnosis may be performed to determine whether maintenance of the drive mechanism 8 is necessary.

For example, when the door 12 is in the fully closed position and the motor 24 is in the non-energized state, when the vibration information Li rapidly rises and then decreases, this vibration can be specified as a disturbance vibration that the train has entered the platform Pf. .. In this case, the integrated control unit 40 may control the determination unit 42 so as not to generate the maintenance information.

Further, the general control unit 40 collects and analyzes disturbance vibration when the train enters the platform Pf in advance to extract a characteristic, stores the characteristic in the storage unit 40m, and stores the vibration information Li. When the characteristics of the disturbance vibration match or are similar, the vibration may be specified as the disturbance vibration. In this case, the determination unit 42 may determine the necessity of diagnosing the state of the drive mechanism 8 or the maintenance of the drive mechanism 8 based on the result of subtracting the specified disturbance vibration from the vibration information Li. Further, in this case, the comprehensive control unit 40 may control the determination unit 42 so as not to generate the maintenance information.

(Component identification part)
As the characteristics of the disturbance vibration, the magnitude and ratio of each periodic or aperiodic component of the disturbance vibration can be considered. Therefore, the influence identifying unit 44 may include a component identifying unit 46 that identifies a periodic or aperiodic component of the vibration information Li. For example, the component identification unit 46 can perform a Fourier analysis on the vibration information Li to identify each component. The integrated control unit 40 may control the determination unit 42 so as not to determine whether maintenance is necessary when the identification result of the component identification unit 46 satisfies a preset condition. For example, the overall control unit 40 stores in advance the ratios and magnitudes of the components of the train disturbance vibration, and when the ratios and magnitudes of the components of the vibration information Li match or resemble the storage. The necessity of maintenance may not be determined.

Next, an information processing related operation of the integrated control unit 40 will be described. The external communication unit 40e communicates with the management device 50 via the network NW, and transmits to the management device 50 information regarding the open/close status of the home door 100 and the presence/absence of an abnormality. The external communication unit 40e of the present embodiment transmits the determination result of the determination unit 42 of the platform door 100 or maintenance information to the management device 50 in real time.

The external communication unit 40e also functions as an external output unit that outputs the vibration information Li of the determination unit 42, the determination result, and the maintenance information to the outside. For example, the external communication unit 40e may transmit these pieces of information to the information terminal possessed by the maintenance staff or the like via the Internet.

The storage unit 40m stores the vibration information Li, the reference value Ls, the threshold value Lt, the determination result of the determination unit 42, and the maintenance information in association with the ID of the platform door 100. The storage unit 40m stores these pieces of information in time series together with the acquisition date and time.

(Condition diagnosis method)
Next, the operation of the home door state diagnosis system 1 thus configured will be described. FIG. 3 is a flowchart showing an example of the operation of the home door state diagnosis system 1. This flowchart shows a process S80 in which the state diagnosis of the drive mechanism 8 is performed in the home door state diagnosis system 1 and the necessity of maintenance is determined. This process may be automatically started by a timer or the like, or may be started based on an operation of an operator such as a station clerk. In this example, the process S80 is executed before or after the start of every day.

When the process S80 is started, the overall control unit 40 transmits an acquisition command signal to all the managed home doors so as to acquire the vibration information Li (step S81). In this step, the overall control unit 40 sends an acquisition command signal to the controller 30 of the platform door 100.

Upon receiving the acquisition command signal, the controller 30 acquires the vibration information Li (step S82). In this step, the controller 30 stores the acquisition result in the information storage unit 30m. The information storage unit 30m stores the integrated information obtained by integrating the vibration information Li with the additional information and the acquisition date and time as described above.

After storing the acquisition result, the controller 30 transmits the integrated information including the vibration information Li stored in the information storage unit 30m to the comprehensive control unit 40 (step S83). In this step, the controller 30 transmits the ID code and the integrated information to the comprehensive control unit 40.

Upon receiving the integrated information including the vibration information Li, the comprehensive control unit 40 stores the integrated information including the vibration information Li in the storage unit 40m (step S84). In this step, the storage unit 40m classifies and stores the received integrated information for each ID code of the transmission source.

After storing the integrated information including the vibration information Li, the comprehensive control unit 40 performs a state diagnosis of the drive mechanism 8 based on the vibration information Li and determines whether maintenance is necessary (step S85). In this step, the overall control unit 40 classifies the vibration information Li into a plurality of sections based on the threshold value Lt. In the embodiment, when the vibration information Li is the first threshold value Lt1 or less, it is determined that the maintenance is not necessary, and when the vibration information Li is more than the first threshold value Lt1 and the second threshold value Lt2 or less, it is determined that the maintenance is required within a predetermined period, If it exceeds the two thresholds Lt2, it is promptly determined that maintenance is required.

When it is determined that the maintenance is not necessary (not required) (N in step S85), the overall control unit 40 ends the process S80. In this case, maintenance information is not generated.

When it is determined that the maintenance is necessary within the predetermined period or promptly (Y in step S85), the overall control unit 40 generates information regarding the maintenance based on the determination result (step S86). In this step, the integrated control unit 40 generates maintenance information based on the determination result.

After generating the maintenance information, the comprehensive control unit 40 transmits the maintenance information to the management device 50 (step S87).

After transmitting the maintenance information, the overall control unit 40 ends the process S80. This processing S80 is merely an example, and other steps may be added, some steps may be changed or deleted, and the order of steps may be changed.

In the above description, an example in which maintenance necessity determination is executed with the home door 100 as the determination target is shown. However, this necessity determination is performed for each home door included in the home door state diagnosis system 1. May be sequentially executed as.

Next, operations and effects of the platform door state diagnosis system 1 of the present embodiment will be described.

The home door state diagnosis system 1 collects the vibration information acquired by the acquisition unit 34 and the acquisition unit 34 that acquires the vibration information Li regarding the vibration of the drive mechanism 8 when the home door 100 is opened and closed by the drive mechanism 8. The determination unit 42 determines whether maintenance is required. According to this configuration, the presence or absence of abnormal vibration or abnormal noise of the home door 100 can be grasped based on the vibration information Li, and the sign of the failure can be grasped accurately. By grasping the symptom of the failure, the necessity of maintenance can be determined and the failure of the home door 100 can be prevented, so that the operation failure can be suppressed and the maintenance cost can be reduced.

The home door 100 has a cover member that covers at least a part of the drive mechanism 8, and a vibration detection unit 38 that is disposed in a region covered by the cover member and that detects the vibration of the drive mechanism 8 directly or as air vibration. Alternatively, the acquisition unit 34 may acquire the detection result of the vibration detection unit 38 as the vibration information Li. In this case, noise and vibration from the outside can be attenuated by the cover member, so that the S/N ratio of the vibration detector 38 can be improved. Further, even when the platform door is installed outdoors in an exposed environment, it is possible to reduce the influence of disturbance and ensure high reliability.

The vibration detection unit 38 may include a plurality of sensors 38b to 38e arranged corresponding to the plurality of elements forming the drive mechanism 8, respectively. In this case, since the plurality of sensors 38b to 38e are provided corresponding to the respective elements of the drive mechanism 8, the element having the symptom of failure can be discriminated depending on which sensor has a large signal.

The state diagnosis system 1 further includes a determination unit 42 that determines whether maintenance of the drive mechanism 8 is necessary based on the vibration information Li, and the determination unit 42 receives the acquisition result of the acquisition unit 34 and a preset reference value Ls. The necessity of maintenance of the drive mechanism 8 may be determined based on the above. In this case, the necessity of maintenance of the drive mechanism 8 can be grasped based on the vibration information Li. Since the determination is made by the relative evaluation with the reference value Ls, it is possible to reduce erroneous determination.

The determination unit 42 may determine whether maintenance is required based on the vibration information Li acquired while the door 12 of the home door 100 moves from the vicinity of the closed position to the closed position. In this case, since abnormal noise or abnormal vibration can be detected near the end of the linear guide 20, the sign of breakage of the end of the linear guide 20, which is easily damaged, can be easily grasped.

The determination unit 42 may determine the necessity of maintenance based on the vibration information Li acquired when the door 12 of the home door 100 is stopped at the closed position or the open position. In this case, when the door 12 is stopped at the closed position or the open position, abnormal noise or abnormal vibration when the door 12 is pressed against the stopper 12s or the like can be detected, so that the vicinity of the end of the linear guide 20 can be carefully evaluated. ..

The present state diagnosis system 1 may further include an influence identifying unit 44 that identifies the influence of the progress of the train, and the determining unit 42 may determine the necessity of maintenance by subtracting the identification result of the influence identifying unit 44. In this case, it is possible to reduce erroneous determination due to disturbance vibration when the train enters the platform Pf.

The influence identifying unit 44 includes a component identifying unit 46 that identifies a periodic or aperiodic component of the vibration information Li, and the determining unit 42 determines that the identification result of the component identifying unit 46 satisfies a preset condition. The necessity of maintenance need not be determined. In this case, since the disturbance vibration can be quantified and its characteristics can be grasped with high accuracy, erroneous determination due to the disturbance vibration can be further reduced. Moreover, since the component of the vibration information Li is specified, the vibration source can be narrowed down by the ratio and size of each component.

Below, 2nd-4th embodiment of this invention is described. In this description, the terms used in the first embodiment are applied to the terms common to the first embodiment.

[Second Embodiment]
The second embodiment of the present invention is a platform door 100. The home door 100 includes an acquisition unit 34 that acquires vibration information Li regarding vibration or noise of the drive mechanism 8 when the door 12 is opened and closed by the drive mechanism 8, and an output unit that outputs the acquisition result of the acquisition unit 34 to the outside. 32, and. According to this configuration, the deterioration state of the drive mechanism 8 can be confirmed from the outside, and the time and effort required for maintenance personnel to go to the site can be reduced. The output unit 32 outputs some or all of status information such as integrated information, information about opening/closing of doors, information about presence/absence of abnormality to an information terminal possessed by a network server or maintenance personnel via a network such as the Internet. You may.

[Third Embodiment]
The third embodiment of the present invention is a method for diagnosing a state of a platform door. In this state diagnosis method, when the home door 100 is opened and closed by the drive mechanism 8, step S82 of acquiring vibration information Li regarding the vibration of the drive mechanism 8 and maintenance necessity based on the acquired vibration information Li. Step S85 of determining whether or not there is. If it is determined in this step that maintenance is required, the overall control unit 40 may generate information regarding maintenance based on the determination result. According to this configuration, the presence or absence of abnormal noise or abnormal vibration of the home door 100 can be grasped based on the vibration information Li, and the sign of the failure can be grasped accurately. By grasping the sign of the failure, it is possible to determine the necessity of maintenance and prevent the failure of the platform door 100.

[Fourth Embodiment]
The fourth embodiment of the present invention is a platform door state diagnosis system. This state diagnosis system subtracts noise information associated with the progress of the train from the vibration information Li acquired from the drive mechanism 8 that opens and closes the platform door 100, and generates information used for maintenance of the drive mechanism 8. For example, the information used for maintenance may be maintenance information generated based on the vibration information Li. According to this configuration, the presence or absence of abnormal noise or abnormal vibration of the home door 100 can be grasped based on the vibration information Li, and the sign of the failure can be grasped accurately. By grasping the signs of failure, the failure of the platform door 100 can be prevented.

The example of the embodiment of the present invention has been described above in detail. The embodiments described above are merely specific examples for carrying out the present invention. The contents of the embodiments do not limit the technical scope of the present invention, and many design changes such as changes, additions, and deletions of components are possible without departing from the spirit of the invention defined in the claims. It is possible. In the above-described embodiment, the contents such as the design change are described with the notations such as “of the embodiment” and “in the embodiment”, but the contents without such notation are designed. Change is not unacceptable.

[Modification]
Hereinafter, modified examples will be described. In the drawings and the description of the modified example, the same or equivalent components and members as those of the embodiment are designated by the same reference numerals. Description that overlaps with the embodiment will be omitted as appropriate, and configurations different from the first embodiment will be mainly described.

In the description of the embodiments, the example in which the cover member is the header box 60 that covers the entire drive mechanism 8 has been shown, but the present invention is not limited to this. For example, the cover member may cover a part of the drive mechanism. Further, a sound absorbing member having a sound absorbing property may be provided between the cover member and the vibration detecting section 38.

In the description of the embodiment, the example in which the determination unit 42 uses the reference value Ls and the threshold value Lt has been shown, but the present invention is not limited to this. For example, the determination unit may use only the reference value Ls. Further, although the example in which the threshold value Lt is a value obtained by adding a margin to the reference value Ls is shown, the threshold value Lt may be obtained by performing a predetermined calculation on the reference value Ls, or table processing using the reference value Ls as a key. You may ask by. That is, the threshold value Lt may have a predetermined relationship with the reference value Ls.

In the description of the embodiment, the example in which the platform door is a full height type in which the height of the door is a person's height or higher is shown, but the present invention is not limited to this. The home door may be a half-height type whose height is lower than a person's height. Such a platform door is sometimes called a movable platform fence.

In the description of the embodiment, the example in which the external communication unit 40e transmits the predetermined information to the network server or the information terminal has been shown, but the present invention is not limited to this. For example, the external communication unit 40e may send the determination result to the outside as an electronic mail. In this case, the determination result can be transmitted to a wide range of parties.

It is also possible to provide each home door with a presentation unit that presents information in a manner that can be perceived by a person, and the overall control unit 40 may output the determination result to the presentation unit of each home door. For example, the presentation unit may include LEDs that emit light of different colors depending on the determination result. In this case, the station worker or the like on the platform Pf can easily notice the abnormality of the belt of the platform door. Further, it is possible to easily identify a home door having an abnormality in the drive mechanism 8 from among many home doors.

The above-described modified example has the same operations and effects as the first embodiment.

Any combination of the above-described embodiments and modifications is also useful as an embodiment of the present invention. The new embodiment generated by the combination has the effects of the combined embodiment and the modified examples.

1... Condition diagnosis system, 8... Drive mechanism, 10... Door engine, 12... Door, 20... Linear guide, 28... Engine drive unit, 30... Controller, 32... Output unit, 34...・Acquisition unit, 38・・Vibration detection unit, 40・・General control unit, 42・・Determination unit, 44・・Effect identification unit, 46・・Component identification unit, 50・・Management device, 52・・Docket, 60 ..Header box, 100..home door

Claims (11)

An acquisition unit that acquires vibration information regarding the vibration of the drive mechanism when the platform door is opened and closed by the drive mechanism,
A home door state diagnosis system, comprising: a determination unit that determines whether maintenance is required based on the vibration information acquired by the acquisition unit. The home door includes a cover member that covers at least a part of the drive mechanism, and a vibration detection unit that is arranged in a region covered by the cover member and that detects the vibration of the drive mechanism directly or as air vibration. ,
The system according to claim 1, wherein the acquisition unit acquires a detection result of the vibration detection unit as the vibration information. The state diagnosis system for a home door according to claim 2, wherein the vibration detection unit includes a plurality of sensors arranged corresponding to a plurality of elements configuring the drive mechanism. Further comprising a determination unit that determines whether maintenance of the drive mechanism is necessary based on the vibration information,
The state diagnosis system for a home door according to any one of claims 1 to 3, wherein the determination unit determines whether maintenance of the drive mechanism is necessary, based on an acquisition result of the acquisition unit and a preset reference value. The home door state diagnosis system according to claim 4, wherein the determination unit determines whether maintenance is necessary based on the vibration information acquired while the door of the home door moves from the vicinity of the closed position to the closed position. .. The said determination part determines necessity of maintenance based on the said vibration information acquired when the door of the said home door is stopping at the closed position or the open position. Condition diagnosis system. Further includes an impact identification unit that identifies the impact of train progress,
7. The system for diagnosing a state of a home door according to claim 4, wherein the determination unit determines whether maintenance is required by subtracting the identification result of the influence identification unit. The influence identifying unit includes a component identifying unit that identifies a periodic or aperiodic component of the vibration information,
The state diagnosis system for a home door according to claim 7, wherein the determination unit does not determine whether maintenance is necessary when the identification result of the component identification unit satisfies a preset condition. An acquisition unit that acquires vibration information about the vibration of the drive mechanism when the door is opened and closed by the drive mechanism,
An output unit that outputs the acquisition result of the acquisition unit to the outside,
Home door with. A step of acquiring vibration information regarding vibration of the drive mechanism when the platform door is opened and closed by the drive mechanism;
A step of determining the necessity of maintenance based on the acquired vibration information,
A method of diagnosing the condition of a platform door including. A system for diagnosing a condition of a home door that subtracts noise information associated with the progress of a train from vibration information acquired from a drive mechanism that opens and closes the platform door to generate information used for maintenance of the drive mechanism.

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